{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["machanical property", "manufacturing process", "material", "process parameter", "process characterization", "engineering feature"], "input": "The 3D printer developed by the Chinese group is much larger than a conventional system and uses the same DDM technology ."}
{"machanical property": [], "manufacturing process": [], "material": [], "process parameter": [], "process characterization": [], "engineering feature": []}